# Abbe–Koenig prism

> reflecting prism used to invert an image, named after Albert König

**Wikidata**: [Q306167](https://www.wikidata.org/wiki/Q306167)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Abbe–Koenig_prism)  
**Source**: https://4ort.xyz/entity/abbe-koenig-prism


## References

1. Freebase Data Dumps. 2013